sample_tcp_client_ip4.py

#!/usr/bin/env python3

# The example support IPv4 only
# Echo client program
import socket

HOST = 'localhost'        # The remote host
PORT = 50007              # The same port as used by the server
with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s:
    s.connect((HOST, PORT))
    s.sendall(b'Hello, world')
    data = s.recv(1024)
print('Received', repr(data))